A primary winding winding device of a current transformer and a winding method thereof

Abstract

A current transformer primary winding winding device and a winding method thereof, comprising a support frame, a secondary winding is placed on the support frame for primary winding winding, further comprising: a first adjusting unit, comprising a horizontal transmission screw, a first hand wheel and a vertical guide plate, driving the vertical guide plate and the vertical slide plate to move synchronously towards or away from each other in a first direction, adjusting the width of the primary winding; a second adjusting unit, comprising a vertical transmission screw and a second hand wheel, driving the vertical slide plate to move synchronously towards or away from each other in a second direction, adjusting the height of the primary winding; the first adjusting unit and the second adjusting unit operate independently of each other. The size of the primary winding can be flexibly adjusted by rotating the hand wheel, and the flexible adjustment of current transformers of different specifications and shapes can be realized without disassembling complex components, the operation is simple, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of winding equipment, and in particular relates to a winding device for the primary winding of a current transformer and its winding method. Background Technology

[0002] In the manufacturing process of current transformers, there is a step of winding the primary winding current coil onto a pre-fabricated annular secondary winding current coil. Furthermore, the wire used in the primary winding current coil is often copper strip or wire with a large cross-sectional area. Copper strip or wire has high rigidity, is not easily deformed, and is difficult to wind.

[0003] The existing technology mostly involves placing the secondary winding current coil on a winding mold and then manually winding it by holding the primary wire. This method is inefficient and labor-intensive. Furthermore, it cannot guarantee the uniformity of the winding and control the size of the coil, and it is also easy to damage the enamel film of the secondary winding conductors during the winding process.

[0004] The existing primary winding winding device of current transformers lacks flexibility and is difficult to adapt to current transformers of different specifications and shapes, thus limiting its versatility and scope of application.

[0005] Therefore, there is an urgent need for a new type of primary winding device that can improve the winding efficiency of the primary winding of current transformers, ensure quality, and adapt to secondary winding current coils of different specifications. This device should be able to flexibly adjust the size of the primary coil to meet the production requirements of 10-35kV current transformers, improve production efficiency, reduce costs, and ensure the stability and reliability of product quality. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a primary winding device and winding method for a current transformer, solving the problems of low flexibility and difficulty in adapting to current transformers of different specifications and sizes in existing primary winding devices.

[0007] The present invention adopts the following technical solution: a winding device for the primary winding of a current transformer, comprising a support frame, on which a secondary winding is placed for winding the primary winding, and further comprising: The first adjustment unit includes a horizontal transmission screw mounted on the support frame, a first handwheel connected to the horizontal transmission screw, and a vertical guide plate connected to the horizontal transmission screw. The bottom of the vertical guide plate is disposed in a first transverse elongated slot on the platform of the support frame. A vertical sliding plate is provided on the vertical guide plate. The first adjustment unit operates the first handwheel to drive the horizontal transmission screw, thereby driving the vertical guide plate and the vertical sliding plate to move synchronously in opposite directions or in opposite directions along a first direction, for adjusting the width of the primary winding. The second adjustment unit includes: a vertical transmission screw mounted on the vertical guide plate and a second handwheel connected to the vertical transmission screw. The vertical slide plate is connected to the vertical transmission screw and is disposed in a vertical long slot hole opened on the vertical guide plate. The second adjustment unit operates the second handwheel to drive the vertical transmission screw, thereby driving the vertical slide plate to move synchronously in opposite directions or in opposite directions along a second direction, for adjusting the height of the primary winding. The first adjustment unit and the second adjustment unit operate independently of each other.

[0008] Furthermore, the first adjustment unit also includes a first sprocket and chain drive mechanism, through which the first handwheel synchronously drives a parallel horizontal transmission screw to rotate, for adjusting the width of the primary winding.

[0009] Furthermore, the second adjustment unit also includes a second sprocket and chain drive mechanism, through which the second handwheel synchronously drives the parallel vertical transmission screw to rotate, for adjusting the height of the primary winding.

[0010] Furthermore, a horizontal guide plate is connected to the top of the vertical guide plate, and the vertical guide plate is slidably fitted into the second horizontal elongated slot hole opened on the horizontal guide plate.

[0011] Furthermore, the support frame includes a platform on which a shelf is connected, the shelf being height-adjustable by a height-adjusting component.

[0012] Furthermore, the height adjustment assembly includes a strut seat mounted on the platform and a strut connected to the strut seat.

[0013] Furthermore, a protective pad is provided on the inner side of the vertical sliding plate.

[0014] Furthermore, a step notch is provided on the inner side of the upper end of the vertical slide plate located above, and a bridge plate is provided at the step notch. The upper surface of the bridge plate is flush with the upper surface of the slide plate, and the outer side of the vertical slide plate and the upper surface of the bridge plate form a primary winding inner mold.

[0015] Furthermore, the bridge plate is a replaceable component used to match primary windings of different widths.

[0016] The second invention provides a method for winding the primary winding of a current transformer, characterized by comprising the following steps: The first and second adjustment units can be operated independently to set the width and height of the primary winding by driving the vertical slide plate to move laterally and vertically. A bridge plate matching the width of the primary winding is installed between the vertical sliding plates to complete the assembly of the inner mold of the primary winding. Place the secondary winding on the shelf and adjust the height of the shelf so that it is located in the lower opening of the primary winding inner mold; The primary winding conductor passes through the center hole of the secondary winding and is wound on the inner mold of the primary winding, forming a primary winding outside the secondary winding.

[0017] The beneficial effects of this invention are that, compared with the prior art, this invention adds a multi-directional adjustable part to the original tooling. The top handwheel drives the vertical transmission screw and the bottom handwheel drives the horizontal transmission screw for adjustment, which can flexibly adjust the inner window size of the primary winding inner mold. It realizes that the horizontal and vertical dimensions are adjustable within a certain range, which can meet the primary winding manufacturing requirements of 1-5 secondary windings of 10-35kV current transformers, and greatly improves the versatility and applicability of the tooling. This invention, through its adjustable design, allows the inner window size of the primary winding to be flexibly adjusted according to current transformers of different specifications and shapes. The adjustment process does not require disassembling complex components, making the operation simple and quick, reducing production costs and improving production efficiency. The current transformer primary winding winding method provided by this invention makes the production process more flexible. The winding process is transformed from relying on manual experience to relying on the shaping of the equipment internal mold, which reduces the labor intensity of workers, eliminates the error of manual operation, improves production efficiency, product quality stability and reliability, and realizes the standardization and controllability of the production process.

[0018] This invention transforms the conventional current transformer primary winding winding device from "single-specification compatibility" to "multi-specification compatibility," improving the input-output ratio of the equipment and making it easier to promote and apply. Attached Figure Description

[0019] Figure 1 This is a front view of the primary winding device of the present invention; Figure 2 This is a left view of the primary winding device of the present invention; Figure 3 This is an isometric view of the primary winding device of the present invention; Figure 4 This is a diagram showing the working state of the primary winding device of the present invention.

[0020] The attached figures are labeled as follows: 1. Second handwheel; 2. Second sprocket; 3. Horizontal guide plate; 4. Bearing seat; 5. Vertical transmission screw; 6. Bridge plate; 7. Nut; 8. Vertical guide plate; 9. Vertical slide plate; 10. Horizontal slider; 11. Platform; 12. First handwheel; 13. Horizontal transmission screw; 14. Column; 15. Frame; 16. Shelf; 17. Support rod; 18. Support rod seat; 19. Second chain; 20. First chain; 21. Primary winding; 22. Secondary winding; 23. First sprocket. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0022] like Figures 1 to 3 Embodiment 1 of the present invention provides a winding device for the primary winding of a current transformer. This device includes a support frame welded from steel plates, exhibiting high structural strength and low manufacturing cost. Figures 1 to 3 As shown, the support frame includes a platform 15, with columns 14 welded to both sides of the platform 15. A tabletop 11 is connected to the top of the columns 14. A strut seat 18 is welded to the top side of the platform 15. A strut 17 is connected to the strut seat 18 by adjusting bolts. A shelf 16 is welded to the top of the strut 17. The shelf 16 is height-adjustable by adjusting bolts on the strut seat 18. Its surface is covered with an anti-slip mat for placing wires and tooling accessories, improving the convenience of operation.

[0023] The vertical slide plate 9 is fixed to the vertical guide plate 8. The vertical slide plate 9 comprises at least four pieces and is independently adjustable. The upper inner side of the upper vertical slide plate 9 has a stepped notch. The two ends of the bridge plate 6 are positioned within the stepped notch, and the upper surface of the bridge plate 6 is flush with the upper surface of the slide plate 9. The outer surface of the vertical slide plate 9 and the upper surface of the bridge plate 6 form the inner mold of the primary winding. The inner surface of the vertical slide plate 9 is provided with a protective pad made of rubber, used to protect the secondary winding 22 and prevent damage to the turns of the secondary winding 22 during primary winding. The width of the bridge plate 6 is equal to the width of the stepped notch of the upper vertical slide plate 9. The bridge plate 6 is a replaceable part, configured according to the width of the stepped notch of the vertical slide plate 9 to match different widths of the inner mold of the primary winding.

[0024] The size of the inner mold of the primary winding is adjusted by the adjustment unit to adapt to current transformers of different specifications. The adjustment unit includes a first adjustment unit and a second adjustment unit, which operate independently of each other.

[0025] Specifically, the first adjustment unit includes a horizontal transmission screw 13 disposed at the bottom of the platform 11, a first handwheel 12 connected to the horizontal transmission screw 13, a vertical guide plate 8 slidably embedded in the first horizontal elongated slot on the platform 11 of the support frame, and a first sprocket and chain transmission mechanism. The bottom of the vertical guide plate 8 is slidably embedded in the first horizontal elongated slot on the platform 11 of the support frame, and the top is connected to a horizontal guide plate 3. The horizontal guide plate 3 has a second horizontal elongated slot parallel to the first horizontal elongated slot. The top of the vertical guide plate... The sliding plate 9 is fitted into the second transverse long slot. The first sprocket and chain drive mechanism includes a first chain 20 and a first sprocket 23. The vertical guide plate 8 is threadedly engaged with the horizontal transmission screw 13. By rotating the second handwheel 12, the first chain 20 is driven to rotate, which drives the vertical guide plate 8 to move synchronously towards or away from the first transverse long slot on the platform 11 and the second transverse long slot on the transverse guide plate 3 through the transverse slider 10. This adjusts the transverse position of the vertical slide plate 9, adjusts the width of the primary winding, and obtains the transverse dimension of the inner mold of the primary winding.

[0026] The second adjustment unit includes a vertical transmission screw 5 rotatably mounted on a vertical guide plate 8, a second handwheel 1 connected to the vertical transmission screw 5, and a second sprocket and chain transmission mechanism. The second sprocket and chain transmission mechanism includes a second sprocket 2 and a second chain 19. The second handwheel 1 and the second sprocket 2 are coaxially fixed. The second sprocket 2 is fixed to one end of the vertical transmission screw 5 via the second chain 19. The vertical transmission screw is rotatably mounted on the vertical guide plate 8 via a bearing seat 4. A nut 7 is fixedly assembled inside a vertical slide plate 9 and threadedly engaged with the vertical transmission screw 5. The vertical slide plate 9 is slidably embedded in the elongated slot of the vertical guide plate 8. By rotating the second handwheel 1, the second sprocket 20 and the second chain 19 are driven, causing the vertical transmission screw 5 to rotate synchronously. This drives the two vertical slide plates 9 mounted on the same vertical guide plate 8 to move synchronously towards or away from each other, adjusting the vertical position of the vertical slide plates 9, thereby adjusting the height of the primary winding and obtaining the longitudinal dimension of the inner mold of the primary winding.

[0027] The primary winding device of this embodiment can adjust the number of copper strip layers or the number of turns of enameled wire according to the cross-sectional requirements of the primary winding conductor, so as to realize the flexible adjustment of the inner mold size of the primary winding. It can adapt to the production of primary windings 21 with different specifications and quantities of 1-5 secondary windings 22, so that the horizontal adjustable range of the inner mold of the primary winding is 100-400mm and the vertical adjustable range is 60-125mm.

[0028] like Figure 4 Embodiment 2 of the present invention provides a method for winding the primary winding of a current transformer, specifically including: Fix the platform 15 on the ground, independently adjust the first adjustment unit and the second adjustment unit, drive the vertical slide plate 9 to move horizontally and vertically, and set the width and height of the primary winding; The bridge plate 6, which matches the width of the primary winding, is installed between the two vertical sliding plates 9 above to complete the assembly of the inner mold of the primary winding. like Figure 4 As shown, the secondary winding 22 is placed on the shelf 16 and positioned within the opening formed by the two vertical sliding plates 9 below by the height adjustment component; The primary winding conductor passes through the center of the secondary winding 22 and is wound around the inner mold of the primary winding to form the primary winding 21 outside the secondary winding 22.

[0029] The beneficial effects of this invention are that, compared with the prior art, this invention adds a multi-directional adjustable part to the original tooling. The top handwheel drives the vertical transmission screw and the bottom handwheel drives the horizontal transmission screw for adjustment, which can flexibly adjust the inner window size of the primary winding inner mold. It realizes that the horizontal and vertical dimensions are adjustable within a certain range, which can meet the primary winding manufacturing requirements of 1-5 secondary windings of 10-35kV current transformers, and greatly improves the versatility and applicability of the tooling. This invention, through its adjustable design, allows the inner window size of the primary winding to be flexibly adjusted according to current transformers of different specifications and shapes. The adjustment process does not require disassembling complex components, making the operation simple and quick, reducing production costs and improving production efficiency. The current transformer primary winding winding method provided by this invention makes the production process more flexible. The winding process is transformed from relying on manual experience to relying on the shaping of the equipment internal mold, which reduces the labor intensity of workers, eliminates the error of manual operation, improves production efficiency, product quality stability and reliability, and realizes the standardization and controllability of the production process.

[0030] This invention transforms the conventional current transformer primary winding winding device from "single-specification compatibility" to "multi-specification compatibility," improving the input-output ratio of the equipment and making it easier to promote and apply.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A primary winding winding device for a current transformer, comprising a support frame, wherein a secondary winding is placed on the support frame for primary winding winding, characterized in that, Also includes: The first adjustment unit includes a horizontal transmission screw (13) disposed on the support frame, a first handwheel (12) connected to the horizontal transmission screw (13) in transmission, and a vertical guide plate (8) connected to the horizontal transmission screw (13). The bottom of the vertical guide plate (8) is disposed in a first transverse long slot hole opened on the table (11) of the support frame. A vertical slide plate (9) is connected to the vertical guide plate (8). The first handwheel (12) of the first adjustment unit drives the horizontal transmission screw (13), thereby driving the vertical slide plate (9) connected to the vertical guide plate (8) to move synchronously in opposite directions or in opposite directions along a first direction, for adjusting the width of the primary winding. The second adjustment unit includes a vertical transmission screw (5) mounted on the vertical guide plate (8) and a second handwheel (1) connected to the vertical transmission screw (5). The vertical slide plate (9) is connected to the vertical transmission screw (5) and is located in a vertical long slot on the vertical guide plate (8). The second handwheel (1) of the second adjustment unit drives the vertical transmission screw (5), thereby driving the vertical slide plate (9) to move synchronously in opposite directions or in opposite directions along the second direction, which is used to adjust the height of the primary winding. The first adjustment unit and the second adjustment unit operate independently of each other; A stand (15) is provided, on which a shelf (16) is connected, the shelf (16) being height-adjustable by a height-adjusting component.

2. The current transformer primary winding winding device according to claim 1, characterized in that, The first adjustment unit also includes a first sprocket and chain drive mechanism. The first handwheel (12) drives the parallel horizontal transmission screw (13) to rotate through the first sprocket and chain drive mechanism to adjust the width of the primary winding.

3. The current transformer primary winding winding device according to claim 1, characterized in that, The second adjustment unit also includes a second sprocket and chain drive mechanism. The second handwheel (1) drives the parallel vertical transmission screw (5) to rotate through the second sprocket and chain drive mechanism to adjust the height of the primary winding.

4. The current transformer primary winding winding device according to claim 1, characterized in that, The top of the vertical guide plate (8) is connected to the horizontal guide plate (3), and the vertical guide plate (8) is slidably fitted in the second horizontal long slot hole opened on the horizontal guide plate (3).

5. The current transformer primary winding winding device according to claim 1, characterized in that, The height adjustment assembly includes a strut seat (18) mounted on a platform (15) and a strut (17) connected to the strut seat (18).

6. The current transformer primary winding winding device according to claim 1, characterized in that, The inner side of the vertical sliding plate (9) is provided with a protective pad.

7. The current transformer primary winding winding device according to claim 1, characterized in that, The upper inner side of the vertical slide plate (9) located above is provided with a step notch, and a bridge plate (6) is provided at the step notch. The upper surface of the bridge plate (6) is flush with the upper surface of the slide plate (9). The outer side of the vertical slide plate (9) and the upper surface of the bridge plate (6) form the inner mold of the primary winding.

8. The current transformer primary winding winding device according to claim 7, characterized in that, The bridge plate (6) is a replaceable part used to match primary windings of different widths.

9. A method for winding the primary winding of a current transformer using the winding device for the primary winding of a current transformer as described in any one of claims 1-8, characterized in that, Includes the following steps: The first adjustment unit and the second adjustment unit are operated independently. By driving the vertical slide plate (9) to move laterally and vertically, the width and height of the primary winding are set. The bridge plate (6) matching the width of the primary winding is installed between the vertical slide plates (9) to complete the assembly of the inner mold of the primary winding; Place the secondary winding (22) on the shelf (16) and adjust the height of the shelf (16) so that it is located in the lower opening of the inner mold of the primary winding; The primary winding conductor passes through the center hole of the secondary winding (22) and is wound on the inner mold of the primary winding, forming a primary winding (21) outside the secondary winding (22).

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